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Finding the Fourth Proportional to 8,508.80, 11,713 and 7,383.12

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Solution

The fourth proportional to 8,508.80, 11,713 and 7,383.12 is: 10,163.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.80 : 11,713 = 7,383.12 : x
  2. Step 2: Convert to fraction form
    8,508.80/11,713 = 7,383.12/x
  3. Step 3: Cross multiply
    8,508.80x = 11,713 × 7,383.12
  4. Step 4: Simplify right side
    8,508.80x = 86,478,484.56
  5. Step 5: Solve for x
    x = 86,478,484.56/8,508.80
  6. Step 6: Final answer
    x = 10,163.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.